API drill collar
group nameDrilling Tools
-
Min Order2 piece
modeldrill collar
-
update timeMon, 08 Apr 2013 00:05:36 GMT
Paramtents
API drill collar blue
CNC or Not Normal
Condition New
Packging & Delivery
Min Order2 piece
Briefing
2.provide bit weight to drill bit so that drill pipe is in tension
3.full size
4.best ser
Detailed
1. API drill collar
2.provide bit weight to drill bit so that drill pipe is in tension
3.full size
4.best service
Drill collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension.
Especially drill collar can keep drill bit centralized and hole track by large rigidity.
Drill collar are manufactured strictly from API Spec 7—1 and SY/T5411 standard.
Drill collar Number | Outside diameter | Inside diameter | Length mm | Bevel Diameter | referred bending strength ratio | ||
mm | in | mm | in | ||||
NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 76.2 | 2.57:1 |
NC26-35(2 3/8 IF) | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42:1 |
NC31-41(2 7/8 IF) | 104.8 | 4 1/8 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
NC38-50(31/2 IF) | 127.0 | 5 | 57.2 | 2 1/4 | 9150 | 121.0 | 2.38:1 |
NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150&9450 | 144.5 | 2.49:1 |
NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150&9450 | 144.5 | 2.84:1 |
NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150&9450 | 149.2 | 2.91:1 |
NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150&9450 | 150.0 | 2.63:1 |
NC46-65(4IF) | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150&9450 | 154.8 | 2.76:1 |
NC46-65(4IF) | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150&9450 | 154.8 | 3.05:1 |
NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150&9450 | 159.5 | 3.18:1 |
NC50-67(4 1/2 IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150&9450 | 159.5 | 2.37:1 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9150&9450 | 164.7 | 2.54:1 |
NC50-70(4 1/2 IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9150&9450 | 164.7 | 2.73:1 |
NC50-72(4 1/2 IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150&9450 | 169.5 | 3.12:1 |
NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150&9450 | 185.3 | 2.70:1 |
NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150&9450 | 190.1 | 3.02:1 |
6 5/8 REG | 209.6 | 8 1/4 | 71.4 | 2 13/16 | 9150&9450 | 195.7 | 2.93:1 |
NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150&9450 | 212.7 | 3.17:1 |
7 5/8 REG | 241.3 | 9 1/2 | 76.2 | 3 | 9150&9450 | 223.8 | 2.81:1 |
NC70-97 | 247.6 | 9 3/4 | 76.2 | 3 | 9150&9450 | 232.6 | 2.57:1 |
NC70-100 | 254 | 10 | 76.2 | 3 | 9150&9450 | 237.3 | 2.81:1 |
8 5/8 REG | 279.4 | 11 | 76.2 | 3 | 9150&9450 | 266.7 | 2.84:1 |
